Packing-ring.



E. E. GALLUP.

PACKING RING.

Patented Dec. I8, |900.

(Apphcatxon led Dec. 23, 1899 (No Model.)

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UNiTEn STATES PATENT Erica.

ELMER E. GALLUP, OF SEWICKLEY, PENNSYLVANIA.

4PACKING-HIRING.

SPECIFICATION forming part of Letters Patent No. 663,879, dated December18, 1900. Appiimion ma December 23,1899. serial no. 741,401. (No maar)To a/ZZ whom it may concern.-

Be it known that I, ELMER E. GALLUP, a citizen of the 'United States,residing at Sewickley, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Packing-Rings, of which improvements the following is aspecification.

The invention described herein relates to certain improvements inpacking-rings for pipe-joints and for other purposes, and has for itsobject a construction whereby the closing of a joint is effected by themoving apart of the sides of the ring without any diminution of thedimensions of the ring in other directions.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this speciication,Figure l is a sectional elevation of a pipe-coupling having my improvedpacking-ring applied thereto, and Fig. 2 is a sectional view of thepacking-ring.

In the practice of my invention the ring is formed of india-rubber orother yielding resilient material and is made of a transverse shapecorresponding to the shape of the recess or pocket in which the ring isto be usedas, for example, in the construction of pipecoupling shown inthe drawings the recesses for the reception of the packing-rings areapproximately V-shaped and the ring is therefore of a similar vshape incross-section. The side of the ring against which the followerring orexpanding device operates is formed with a recess 2 for the reception ofa rib or projection4 3 on the follower-ring 4 or eX- pander. Thisprojection or rib is preferably made conical in cross-section, so thaton entering the recess 2 in the packing-ring it will press the lips 5outward against the sides of the recess or pocket in which the ring isplaced.

It will be observed that this outward movement of the lips 5, whichcorresponds to the lateral enlargement of the ordinary form of packing,is not effected by a compression of the body of the ring and consequentreduction of its size in the line of such compressive action.

It will be observed that the follower-ring not only spreads the lipsoutwardly, but also forces the ring bodily into the recess, so that itssides for their entire length bear closely against the walls of therecess or pocket.

It will be observed that the lips when eX- panded by the rib orprojection 3 form `wedges between the sides of the projection or rib andthe sides of the pocket, and hence any outward movement of thepipe-sections or other article against which the packing-ring is pressedwill cause the lips to be more Iirmly wedged in place, and thereby holdthe pipe or other article as against such outward movement.

I claim herein as my inventionl. As a new article of manufacture,awedgeshaped packing-ring formed of india-rubber and having an annularV-shaped recess in its rear face, substantially as set forth.

2. As a means for packing joints, an indiarubber packing-ring having atransverse contour corresponding to the contour of the pocket or recessinwhich the ring is to be fitted, and provided with an annular V-shapedrecess in its rear wall and a follower-ring having an annularconically-shaped rib or projection, substantially as set forth.

In testimony whereof I have hereunto set.

my hand.

ELMER E. GALIJUP.

Witnesses:

DARWIN S. WOLOOTT, G. I. HoLnsHIP.

